A bad image: complex atmosphere, poor deglinting Stratified waters are correctly accounted for in 4SM: very clear in the SE corner DTM is faulty in the SE corner KBLUE/KGREEN=0.42 ==> WaterType OIB+0 ==> No need to decrease KREDSomething is very wrong: deeper than ~10 m: calibration not under control CoefKPAN=1.25